Cutter mechanism for packaging machines



Jan. 7, 1936, R J. HUTT ET AL CUTTER MECHANISM FOR PACKAGING MACHINESOriginal Filed March 24, 1935 2 fiGeorgeLf fltiarne Patented Jan. 7,1936 PATENT OFFICE 7 2,027,233 CUTTER MECHANISM FOR PACKAGING MACHINES iRobert J. Hutt and George A. Hutt,

Brooklyn, N. Y.

Original application March 24, 1933, Serial No.

662,492. Divided and this application November 30, 1934, Serial No.755,430

5 Claims. (01. 164-62) This invention relates to a cutter mechanism fora packaging machine, the cutters being operated by a common powered unitin respective alternate actions for accomplishing different re- 5 sultsby individual rotary and oscillatory movements'during a single completemovement of the driving or powered unit.

An object of the invention is to accomplish one function by one cutterof said mechanism 10 and a double function by the other cutters thereof,and said functions are accomplished through a powered element common toall of said cutters.

This application is divided from a copending 15 application Ser. No.662,492, filed March 24, 1933,

for Packaging machines.

The invention has for its further objects to provide certain other novelfeatures, all of which will be more clearly described and claimed.

20 In the drawing- Fig. 1 is a skeletonized side elevation of thepackaging machine above referred to, with the cutter mechanism mountedthereon.

Fig. 2 is a plan view of the rear portion of 25 the packaging machine ofFig. 1.

Fig. 3 is anenlarged cross-sectional elevation taken about on the line3-3 of Fig. 2.

Fig. 4 is a fragmentary plan view as indicated by the arrow 4, of Fig.3.

30 Fig. 5 is an enlarged side elevation as indicated by the arrow 5, ofFig. 2 showing the parts in the cutting position.

Fig. 6 is a similar view but showing the parts in the recovery position.

36 Fig. '7 is an enlarged cross-sectional fragmentary view taken abouton the dotted line '|--l of Fig. 5.

Describing the construction in detail, l designates the packagingmachine to which the 40 invention is applied.

The packaging machine generally comprises a supporting frame ll overwhich webs of paper I2 for forming packages l3 are caused to travel inintermittent movements, the movements be- 4 ing equal to the determinedrunning dimension of the packages.

The packaging machine proper comprises a power plant [4, a web feedingmechanism IS, a

50 printing mechanism [6, and a gluing mechanism 11.

Referring now to the inventive features; mounted for reciprocatorymovements on the opposite upper side rails 18, of the machine 55 frameH, are slide bars I9 and 20, the latter having an extension 2| which ispermanently connected in any manner with a rack-bar 22.

The slide bars I9--20 are bolted to opposite posts 24 as at 25' (Fig. 7)said posts being provided with journals 26, in which a rock-shaft 21operates, and keyed to the ends of this rockshaft are upstanding arms28, having upper bearings 29 for a connecting shaft 30, which isextended at both sides of the machine to receive, in pivotal relation,the rear ends of crank-rods 10 3|, connected at their forward ends withpreferably adjustable power cranks 32, driven through the power plant l4and connections.

. Fixed to a side rail l8 of the frame II, is a vertically arrangedtrack piece 33, formed with a semi-circular recess 34 and it is spacedfrom the side rail to form a groove 35. A gate-piece 36 is looselysuspended from the connecting shaft or bar 30, and has a curved recess31, which underlies a roller 38 riding on the track 33, as the saidslide bars and associated parts are forced backwardly in the web feedingmovement and at near the end of this movement the roller 38, revolubleon the end of an arm 39, fixed. on a cutter bar 40 will drop into andquickly ride out of said recess 31, which action permits of a drop ofthe sharp edge of the cutter bar 40, superinduced by a weight 4|, on anarm 42, also adjustably fixed to said cutter bar 40, which has its rearedge pivoted to the slide rails i9 and 20 as shown at 43, thuscross-cuttin the webs into packages.

Just prior to the back movement of the slide rails and their associatedparts, the arms 28 are swung to the left as in Fig. 6, thus drawing thewide end of the gate piece over and raising the roller 38 to the levelof the track 33 and thus raising the cutter edge to the inoperativeposition until the roller again is moved over the recess in said trackwhen another cut will take 40 place by gravitational movement of thefree sharp edge of the cutter bar.

The rack-bar 22 extends forwardly at one side of the packaging machineand operates in meshed contact with a gear 44, carried on one end of arotary shaft 45, journalled in suitable bearings 46, resting on the siderails of the machine and journalled in the same bearings, is an upper orprimary cutter shaft 41, (Fig. 3) on which a pair of rotary disk cutters48, a gear 49, and a ratchet wheel 50 are pinned, together with asprocket wheel 5| which is loose on said shaft. A pawl 52 is pivoted tothe loose sprocket wheel and is held in contact with the ratchet wheelby a spring 53.

Fixed to the shaft 45, inward of one of the bear- 55 ings 46, is asprocket'wheel 54, which through a 'chain 55, drives the said sprocketwheel 5|, thus the ratchet wheel 50, with the disk cutters inactive.

Mounted between the side rails of the machine and directly under thecutter shaft 41, is a secondary cutter shaft 56, on which are pinnedlower cutter disks 51, operable in overlapping relation with the uppercutter disks 48, and a gear 58, in mesh with the gear 49, for drivingthe lower shaft.

From the above description, it will be clear that the slides l9 and 2Band the connected rack-bar, constitute a powered unit for operating allof the cutters of the mechanism, the slides functioning to carry thecross cutter back to its gravitationally operated position and therack-bar acting to operate the disk-cutters in one of its movements.

What we claim and desire to secure by Letters Patent is:--

1. Cutter mechanism in a machine for forming packages of sheet webs andinterposed contents; an oscillatory cutter for severing the webs atappropriate intervals; rotary cutters for trimming the edges of the websand for guiding the same against lateral displacement; said cuttershaving alternate actions while said webs are passing through saidmachine; and means. for actuating the cutters in the manner set forth.

2. In combination, a carriage, a cutter bar pivoted to a part of saidcarriage and movable therewith; a fixed track having a recess; an armnormally fixed, but adjustable relative to said bar;

a roller on said arm and in contact with said 5 track, said cutter baractive only when said roller enters said recess in a movement of saidcarriage.

3. In combination, a carriage; a cutter bar pivoted thereto; a fixedtrack; an arm on the cutter bar; a roller on said arm and in contactwith said 10 track; and means for releasing said cutting bar to fallintocutting action as the carriage moves into its feeding limit.

4. A cutter mechanism for packaging machines, comprising agravitationally operated cutter for cross-severing webs of paper when atrest; a gang of cutters for trimming the edges of said webs when inmotion, said cross-cutter and trimming cutters having alternateoperations, and a powered unit for causing said operations.

5. A cutter mechanism comprising in combination, slide bars, a cutterplate pivoted at its inactive side to said slide-bars; a gear rackextending from one of said slide bars; a shaft having a sprocket and agear thereon, said gear in mesh with said rack-bar; a primary cuttershaft having a sprocket; a chain traversing said sprockets; meanswhereby the primary shaft may be operated in one direction only; asecondary cutter shaft located below the primary shaft, each shafthaving a gear in meshed relation; and disk cutters on said shaftsoperable in overlapping relation.

ROBERT J. HUTT. GEORGE A. HUTT.

